Re: DMA is turned off on my HDD

[Anton Liaukevich <anthonyl@uvaga.by>]

Bob Cox wrote:
> On Thu, Jul 17, 2008 at 20:03:00 +0300, Anton Liaukevich (anthonyl@uvaga.by) wrote: 
>
> > Bob Cox wrote:
> > > On Thu, Jul 17, 2008 at 14:48:22 +0300, Anton Liaukevich 
> > > (anthonyl@uvaga.by) wrote: 
> > >
> > > [snip]
> > >
> > > > I had scanned my hdd with native WD scanner and hadn't detected any   
> > > > error. Memory scan (memtest86+) also hadn't detected any error.   
> > > > Moreover, Windows XP on another partition of this hdd working 
> > > > normally  and HDD Health program on it (for S.M.A.R.T viewing) don't 
> > > > predict  T.E.C. in the near future. Also after previous installation 
> > > > of Debian  lenny my hdd was working fast.
> > > When you are running Windows XP, is DMA definitely enabled then?
> > I has run Windows XP and has been convinced of DMA to be enabled. My hdd  
> > WD1200JB-00EVA0 was running at UDMA5 (ATA100) and cdrom Sony CRX320E at  
> > UDMA2 (ATA33).
>
> [ PLEASE reply to the list and not directly to me.  Thank you ]
>
> Ok well if you are sure about this then at least we know it is not a
> hardware (jumpers, cable, connectors) problem.
>
> With my WD IDE drive:
>
> bob@trantor:~$ dmesg | grep -i dma
>   DMA             0 ->     4096
>   DMA zone: 32 pages used for memmap
>   DMA zone: 0 pages reserved
>   DMA zone: 4064 pages, LIFO batch:0
> atp870u: use 32bit DMA mask.
> NFORCE2: 0000:00:09.0 (rev a2) UDMA133 controller
>     ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA
>     ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
> hda: UDMA/100 mode selected
> hdc: UDMA/66 mode selected
> hdd: UDMA/66 mode selected
> parport0: PC-style at 0x378 (0x778), irq 7, dma 3
> [PCSPP,TRISTATE,COMPAT,EPP,ECP,DMA]
>
>
> bob@trantor:~$ readlink /sys/block/hda/device/driver
> ../../../../../bus/ide/drivers/ide-disk
>
> bob@trantor:~$ lsmod | grep ^ide
> ide_cd                 36224  0
> ide_disk               15648  8
> ide_core              108292  4 ide_cd,ide_disk,amd74xx,generic
>
> Not sure if any of that is of help, but perhaps you could show us the
> output of dmesg | grep -i dma
Now I am simply showing you output of commands suggested me by Bob Cox.

anthony@leva:~$ dmesg | grep -i dma
  DMA             0 ->     4096
  DMA zone: 32 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 4064 pages, LIFO batch:0
NFORCE2: 0000:00:09.0 (rev a2) UDMA133 controller
parport0: PC-style at 0x378 (0x778), irq 7, dma 3 
[PCSPP,TRISTATE,COMPAT,EPP,ECP,DMA]

anthony@leva:~$ readlink /sys/block/hda/device/driver
../../../bus/ide/drivers/ide-disk

anthony@leva:~$ lsmod | grep ^ide
ide_cd                 36224  0
ide_disk               15648  8
ide_generic             1280  0 [permanent]
ide_core              108292  5 generic,amd74xx,ide_cd,ide_disk,ide_generic